"The minister disclosed that hackers encrypted the NHIS and demanded payment, assuring MPs 'the hackers won’t damage the information on the NHIS. ' "
That's from the Tonga Ministry of Health commenting on encryption of its national health information system and ransom demand.
https://talanoaotonga.to/health-ministrys-information-system-hit-by-ransomware-attack/
There is no explanation of how she knows that the (unnamed) hackers won't damage the information on the system.
The system is currently offline so I can't even email the ministry to ask.
TALANOA 'O TONGA · Health ministry’s information system hit by ransomware attack – TALANOA 'O TONGATonga’s National Health Information System (NHIS) suffered a ransomware breach this week, says Dr ʻAna ʻAkauʻola his evening. The system has been shut down, and
is around 12,111 km or 7,569 miles from our previous place of worship Ha'ateiho in 
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Confirmed: Metrics indicate a major disruption to internet connectivity in 
Greg Cocks 
